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CompletedNCT06142994AАBAUpdated Oct 30, 2024

Treatment of Adults With Acute Bronchitis in the Primary Healthcare Setting

An interventional study of Atusin CAP and Placebo in Acute Bronchitis, sponsored by Neopharm Bulgaria Ltd.. Completed at 1 site in Bulgaria. Open to participants aged 18 Years to 60 Years. Per ClinicalTrials.gov, last updated 2024-10-30.

Sponsored by Neopharm Bulgaria Ltd. · Not applicable, Interventional, and Treatment

Phase
Not applicable
Study type
Interventional
Enrollment
310
Allocation
Randomized
Ages
18 Years to 60 Years
Sex
All
01

Study summary

The study aims to evaluate the effectiveness and safety of Atusin® CAP in reducing the severity of acute bronchitis.

Read the detailed description

A prospective, multicenter, double-blind, placebo-controlled, randomized, parallel study will be conducted to evaluate the effect of Atusin® CAP on the rapid relief of irritating cough in adults with acute bronchitis treated in actual clinical practices in primary healthcare, where patients seek help as a result of serious complaints.

The combination of the three extracts: a mix of essential oils, bromelain and green Brazilian propolis may represent a breakthrough in symptomatic treatment by blocking the triggering mechanisms of cough due to acute bronchitis.

02

Conditions studied

  • Acute Bronchitis

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Keywords

  • Cough
  • Sputum
  • Mix of essential oils
  • Bromelain
  • Green Brazilian propolis
  • Acute Bronchitis
  • Adults
03

In context

Bronchitis

156 studies on the registry are indexed under Bronchitis; 21 are open to participants now.

This study's enrollment of 310 is above the median of 185 across 105 interventional studies indexed under Bronchitis.

Browse Bronchitis studies →

Lead sponsor

Neopharm Bulgaria Ltd. is the lead sponsor of 3 studies on the registry; none are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 60 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

Male and female ambulatory subjects

  1. Age of 18 to 60 years
  2. Clinical diagnosis of "Acute bronchitis" meeting the following criteria:

    • ≥6 cough attacks in the day preceding the screening visit;
    • Bronchitis Severity Scale (BSS) ≥ 5 point at screening (out of 20 points maximum);
    • Cough severity of ≥4 on the Visual Analogue Scale (VAS) at screening
    • Body temperature \< 39.0°C
  3. Duration of symptoms ≤ 5 days before enrollment in the study;
  4. Occurrence of initial symptoms (sputum production with impaired expectoration) within 2 days prior to initiation of study treatment;
  5. Good physical and mental condition;
  6. Non-smokers (Active smoking of \< 5 cigarettes per day or subjects who stopped smoking at least six months before enrollment in the study).
  7. : 18,0 - 29,9 kg/m2
  8. In the judgement of the Investigator, the subject is capable of adhere with the visit schedule, complying with study treatment regimen and completing the study.
  9. The subject has a smartphone and is capable of using it.
  10. The subject must sign an form approved by an Ethics Committee and must agree to carry out the necessary visits to the site.

Exclusion criteria

Exclusion Criteria:

  1. History of or current confounding respiratory disease (for example, , allergic rhinitis, chronic sinusitis or chronic bronchitis - including acute exacerbations, emphysema, bronchiectasias, asthma, cystic fibrosis, tuberculosis, lung cancer, etc.); lung radiogram revealing pulmonary inflammatory lesions; suspected pneumonia - imaging diagnostics is used mainly to rule out pneumonia.

    ACCP 2006 Guidelines point out that an imaging assessment is not indicated in patients with symptoms of acute bronchitis, who have normal vital signs and normal pulmonary evaluation.33 Absence of the following findings reduces the likelihood of pneumonia sufficiently to eliminate the need of chest radiogram or hospital admission:

    • heart rate > 100 beats/min;
    • respiratory rate > 24 breaths/min;
    • oral body temperature > 39,0 C;
    • blood pressure: systolic \< 90 mmHg, diastolic \< 60 mmHg;
    • SaO2 \< 92%; If Investigator suspect pneumonia, the subject will not be enrolled in the study until the diagnosis of "Pneumonia" is ruled out;
  2. Concurrent bacterial infection;
  3. Elevated body temperature (> 39,5°C rectal or ≥39,0°C axillary);
  4. Subject administers antibiotics at the time of screening or for whom antibiotics are indicated, in the judgment of the Investigator;
  5. History of cough lasting over 5 days;
  6. Active smoking of ≥ 5 cigarettes per day;
  7. to the study treatment;
  8. Active concurrent disease which may interfere with subject's ability to participate in the study, in the judgement of Investigator:

    • Sleep apnea;
    • Elevated liver enzymes (≥ 3 times the (ULN));
    • Severe kidney dysfunction ( \< 30 mL/min);
    • Uncontrolled diabetes mellitus (plasma glucose ≥ 250 mg/dL);
    • Uncontrolled hypertension (systolic blood pressure ≥ 160 mmHg or diastolic blood pressure ≥ 100 mmHg);
    • Active peptic ulcer and gastrointestinal bleeding; coagulopathy; cataract(s); advanced malignant disease; significant cardiac disease (for example heart failure class III/IV, pulmonary hypertension, peripheral artery disease);
  9. Antibiotics, antivirals, , anticoagulants; treatment with antitussives or expectorants in the 7 days prior to enrollment in the study; monoamine oxidase (MAO) inhibitors (for example, antidepressants, antipsychotics, or medications for Parkinson's disease) within 2 weeks prior to randomization;
  10. Subjects in poor condition requiring urgent hospitalization, or planned hospitalization during the study;
  11. Women who are pregnant or lactating;
  12. Women who plan on getting pregnant during the study;
  13. Participation in a clinical study within the last 8 weeks;
  14. Evidence or suspicion of non-compliance;;
  15. Risk of lost to follow-up;
  16. Inability to give ;
  17. Alcohol or drug abuse in the last year;
  18. Unstable medical conditions, as determined by the Investigator;
  19. Inability to comply with the study protocol.
Terms in these criteria, in plain language(7)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

BMI (body mass index)

Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.

What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

COPD

Chronic obstructive pulmonary disease: long-term lung disease that makes it hard to breathe out, including emphysema and chronic bronchitis.

Hypersensitivity

An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.

ULN (upper limit of normal)

The top of the normal range for a blood test, as set by the laboratory that runs it. Each lab prints its own range next to your result.

“≤ 2.5 × ULN” means the result can be up to two and a half times that top value.

GFR and eGFR (kidney filtering)

GFR (glomerular filtration rate) is how much blood the kidneys filter each minute. It is usually estimated from a blood test — eGFR, by formulas such as CKD-EPI or MDRD — and some studies ask for it to be measured directly instead. Usually given in mL/min/1.73 m².

Check the method, the units and the minimum the study states. A value of 90 or above is in the normal-or-high range, but kidney damage can show in other tests too.

Corticosteroids (steroids)

Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.

Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.

05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Quadruple (Participant, Care provider, Investigator, Outcomes assessor)
Enrollment
310 participants (actual)

Study arms

  • Experimental
    Verum group

    10 days of treatment with 3 daily doses of 420 mg (available in an capsule of 210 mg), as recommended by the manufacturer. 6 capsules daily for 10 days: 2 capsules in the morning (30 minutes before breakfast), 2 capsules at noon (30 minutes before lunch), 2 capsules in the evening (30 minutes before dinner)

    Dietary Supplement: Atusin CAP

  • Placebo comparator
    Placebo

    10 days treatment with a 3-day dose of 420 mg placebo capsules (available in an indistinguishable capsule of 210 mg). 6 capsules daily for 10 days: 2 capsules in the morning (30 minutes before breakfast), 2 capsules at noon (30 minutes before lunch), 2 capsules in the evening (30 minutes before dinner)

    Dietary Supplement: Placebo

Interventions

  • Dietary supplementAtusin CAP

    This food supplement contains a distillate of 4 types of purified oils - eucalyptus, sweet orange, lemon and myrtle, rich in 1,8-cineol, limonene, alpha-pinene in the ratio: 66:32:1:1, bromelain and green Brazilian propolis in a gastro-resistant capsule. The product contains excipients: microcrystalline cellulose, silica dioxide, copovidone, magnesium stearate.

  • Dietary supplementPlacebo

    The placebo product will be identical in shape, appearance and color to the active product and will have the same composition but without the active ingredients.

06

What researchers measure

Primary outcomes

  1. Bronchitis severity assessment

    The bronchitis severity assessment will be performed using the Bronchitis Severity Scale by the Investigator. The intensity of symptoms - frequency of coughing attacks, sputum discharge, rales on auscultation, chest pain on coughing and dyspnea will be assessed using a 5-point Likert scale: 0=Absent (1-2 times/day), 1=mild (3-5 times/day), 2=moderate (6-10 times/day), 3=severe (11-20 times/day), 4=very severe (\>20 times/day). Clinical cure is defined as ⩾75% reduction in baseline Bronchitis Severity Scale after 10 days.

    Time frame: Up to 14+2 days after starting treatment

Secondary outcomes

  1. Reduction in cough severity

    The severity of the cough by Visual Analogue Scale (VAS) is a single element measure of the subject's current perception of the severity of the cough. It is rated on a scale of 10 cm (100 mm), where "0" stands for "Absent" and "10" represents "The most severe possible cough". The decrease in cough severity per VAS by ⩾ 20 mm is assumed to be significant in this study.

    Time frame: Up to 14+2 days after starting treatment

  2. Reduction of the duration (in days) of moderate to severe cough

    Number of continuous days with moderate to severe cough. The severity of cough is assessed by the subject every evening at bedtime on Day 1 through Day 10, using the Visual Analogue Scale (VAS). The duration of moderate to severe cough will be calculated taking into account the number of consecutive days (2, 3,..10) in which the subject noted severity of cough of ≥ 5.

    Time frame: up to 14+2 days after start of treatment

  3. Frequency of daytime cough attacks

    An attack is defined as a single cough of 3 or more consecutive coughs. Evaluated by: * Investigator at subject enrollment, during screening at Visit 1 (V1) (Day 1), and the data will serve as a baseline, and on V2, V3 and V4 using the Bronchitis Severity Scale. * Subject every evening at bedtime on Day 1 through Day 10, using an Acute Bronchitis Severity Score.

    Time frame: Up to 14+2 days after start of treatment

  4. Reduction in the frequency of nocturnal cough

    The baseline frequency of cough attacks is evaluated by the Investigator at subject enrollment during screening Visit 1 (V1; CRF record) Day 1, using the Bronchitis Severity Scale and by the subject every evening at bedtime on Day 1 through Day 10, using the Acute Bronchitis Severity Score. The frequency of nighttime cough will be assessed daily from Day 1 (enrollment) to Day 10 and changes in its frequency will be analyzed after 1-10 days from baseline (change in day/night cough frequency after k days of treatment = frequency of day/night cough after k days of treatment - frequency of cough at enrollment (Day 1), where k = 1, 2,...,10).

    Time frame: Up to 10 days after the start of treatment

  5. Quality of life (QoL)

    Limitation of daily activity is assessed by the Investigator at trial entry and by subject every evening at bedtime on Day 1 through Day 10 using the Acute Bronchitis Severity Score (ABSS).

    Time frame: Up to 10 days after start of treatment

  6. Adverse events

    Incidence of mild (e.g. self-resolving), moderate (e.g. those requiring medical evaluation) and severe (e.g. those requiring prolonged hospitalization) serious and non-serious adverse events.. Recorded daily by the subjects in ePD and by Investigators in eCRF

    Time frame: Up to 14+2 days after starting treatment

  7. Response to treatment

    At each visit during/after treatment (V2, V3 and V4), response to treatment is assessed by the Investigator using a verbal rating scale (VRS): 0 = symptoms resolved \[resolved\], 1 = symptoms improved compared to baseline, 2 = symptoms unchanged compared to baseline, 3 = symptoms worsened compared to baseline. Subjects with points 0 or 1 are defined as "responders"; subjects with points 2 or 3 were defined as "non-responders".

    Time frame: Up to 14+2 days after starting treatment

07

Study locations

1 site
  • University Hospital "St George"
    Plovdiv, Bulgaria
08

References and documents

Publications

  • Clark TW, Medina MJ, Batham S, Curran MD, Parmar S, Nicholson KG. Adults hospitalised with acute respiratory illness rarely have detectable bacteria in the absence of COPD or pneumonia; viral infection predominates in a large prospective UK sample. J Infect. 2014 Nov;69(5):507-15. doi: 10.1016/j.jinf.2014.07.023. Epub 2014 Aug 6. PubMed 25108123 ↗
  • Gonzales R, Sande MA. Uncomplicated acute bronchitis. Ann Intern Med. 2000 Dec 19;133(12):981-91. doi: 10.7326/0003-4819-133-12-200012190-00014. PubMed 11119400 ↗
  • Braman SS. Chronic cough due to acute bronchitis: ACCP evidence-based clinical practice guidelines. Chest. 2006 Jan;129(1 Suppl):95S-103S. doi: 10.1378/chest.129.1_suppl.95S. PubMed 16428698 ↗
  • Thomas M, Bomar PA. Upper Respiratory Tract Infection. 2023 Jun 26. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2025 Jan-. Available from http://www.ncbi.nlm.nih.gov/books/NBK532961/ PubMed 30422556 ↗
  • Tackett KL, Atkins A. Evidence-based acute bronchitis therapy. J Pharm Pract. 2012 Dec;25(6):586-90. doi: 10.1177/0897190012460826. Epub 2012 Oct 16. PubMed 23076965 ↗
  • Malesker MA, Callahan-Lyon P, Ireland B, Irwin RS; CHEST Expert Cough Panel. Pharmacologic and Nonpharmacologic Treatment for Acute Cough Associated With the Common Cold: CHEST Expert Panel Report. Chest. 2017 Nov;152(5):1021-1037. doi: 10.1016/j.chest.2017.08.009. Epub 2017 Aug 22. PubMed 28837801 ↗
  • Bagcchi S. Stigma during the COVID-19 pandemic. Lancet Infect Dis. 2020 Jul;20(7):782. doi: 10.1016/S1473-3099(20)30498-9. No abstract available. PubMed 32592670 ↗

Individual participant data

Plan to share: No

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Oct 30, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06142994
Lead sponsor
Neopharm Bulgaria Ltd.
Responsible party
Sponsor
First posted
Nov 22, 2023
Start date
Jan 30, 2024
Primary completion
Jun 20, 2024
Completion
Jun 20, 2024
Last update
Oct 30, 2024

Study contacts

Vladimir Hodzhev, Prof, PhD
principal investigator · Head of Pulmonology clinic in the UMHAT "Sveti Georgi", Medical University-Plovdiv
Diana Petkova, Prof, PhD
principal investigator · Clnic of Pneumology at UMHAT "St. Marina", Medical University - Varna
Rossen Petkov, Prof, PhD
principal investigator · Head of Pulmonology clinic in the UMHAT St Ivan Rilski, Medical University of Sofia
Yavor Ivanov, Prof, PhD
principal investigator · Head of Pneumology and Phthisiology clinic in the UMHAT "Dr. Georgi Stranski"

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Nov 2023. You cannot join it, but the record below documents what was studied.

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